Grid Grounding Calculations for a 132-KV Substation Using Soil Backfilling

Design of 132 / 33 KV Substation

Grounding Grid Performance of Substation in Two Layer Soil - a Parametric Analysis

During ground faults, fault current flows in the ground which results in potential gradient and ground potential rise (GPR). The potential gradient affects the safety of operating person due to step and touch voltage and GPR affects the insulation of protective devices and control cables. The potential gradient and GPR are the functions of ground electrode geometry. In this paper, performance a...

Design of Earthing System for a Substation : A Case Study

This paper presents the design of earthing system for 132 KV substation and simulation for calculation of required parameters. This paper is to provide information pertinent to safe earthing practices in ac substation design and to establish the safe limits of potential difference under normal and fault conditions. The grounding grid system of a practical 220 kV substation is calculated by MATL...

Grid Jobs Scheduling Improvement Using Priority Rules and Backfilling

Over the past decade, scheduling in grid computing system has been an active research. However, it is still difficult to find an optimal scheduling algorithm to achieve load balancing. Most of the researchers have focus on schedule-based algorithms such as genetic algorithm and particle swarm optimization to solve this problem and us e priority rules algorithms as initial schedule in those algo...

Back-flashover Investigation of HV Transmission Lines Using Transient Modeling of the Grounding Systems

The article presents the transients analysis of the substation grounding systems and transmission line tower footing resistances which can affect to the back-flashover (BF) or overvoltage across insulator chain in an HV power systems by using EMTP-RV software. The related transient modeling of the grounding systems is based on a transmission line (TL) model with considering the soil ionization....